Improper locking in Linux kernel f2fs

1) Improper locking

EUVDB-ID: #VU102153

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56744

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the system_going_down() and f2fs_handle_critical_error() functions in fs/f2fs/super.c, within the f2fs_stop_checkpoint() function in fs/f2fs/checkpoint.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/1539a088b108996bcdaddb7775070b5163b14233
https://git.kernel.org/stable/c/801092a2c9c251ef6a8678fcb8fcc1220474a697
https://git.kernel.org/stable/c/ecf4e6782b01fd578b565b3dd2be7bb0ac91082e
https://git.kernel.org/stable/c/f10a890308a7cd8794e21f646f09827c6cb4bf5d

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.